Easy Brussels Sprouts Casserole

Ingredients

• 6 slices bacon, chopped
• 2 pounds Brussels sprouts, ends trimmed and halved
• 1/2 yellow onion, chopped
• 1 teaspoon salt
• 1/2 teaspoon ground black pepper
• 1/8 teaspoon cayenne pepper
• 3/4 cup heavy cream
• 2 teaspoons Dijon mustard
• 1 tablespoon lemon juice
• 4 ounces Monterrey Jack cheese, shredded
• 4 ounces sharp cheddar cheese, shredded
• 1 tablespoon olive oil
• 1/2 cup panko
• 1 tablespoon parsley, chopped
• 1 teaspoon lemon zest
• 1/4 teaspoon salt
• 1/4 teaspoon ground black pepper